National Income (Junior Cert Business Studies): Revision Notes
📚Revision Notes
National Income
What is national income?
National income represents the total value of all earnings generated from a country's production of goods and services over a one-year period. Think of it as measuring how much wealth a nation creates annually through its economic activities.
The Central Statistics Office (CSO) is responsible for calculating Ireland's national income. They also report on the country's gross domestic product (GDP), which measures the total market value of all goods and services produced within Ireland in one year.
Important
National income is the total net earnings from a country's production of goods and services in a year.
Methods of calculating national income
Economists use two main approaches to measure national income, and both should produce the same result:
Income method
This method calculates national income by adding up all the income earned by economic resources (the factors of production) within a year. It focuses on what producers receive for creating goods and services.
Example
Example: Income Method Components
This includes:
- Wages paid to workers at Guinness brewery
- Profits earned by Ryanair
- Rent received by property owners
- Interest paid by banks
Expenditure method
This approach calculates national income by totalling all spending on goods and services produced in one year. It examines what consumers pay for products and services.
Example
Example: Expenditure Method Components
This includes:
- Money spent on groceries at SuperValu
- Fees paid for mobile phone contracts with Three Ireland
- Tickets purchased for concerts at 3Arena
Note
Both the income method and expenditure method should theoretically produce the same national income figure, as one person's expenditure becomes another person's income in the economic cycle.
Understanding GDP and GNP
Gross domestic product (GDP)
GDP measures the total market value of goods and services produced within Ireland's borders in one year, regardless of who owns the businesses producing them.
For instance, GDP includes production from both Irish companies like AIB Bank and foreign companies operating in Ireland like Google's European headquarters in Dublin.
Gross national product (GNP)
GNP takes a different approach by focusing on ownership rather than location. It considers who produced the goods and services, not where they were made.
To understand GNP, think about where the money ultimately ends up. If an Irish software engineer works for a company in Germany, their income would be added to Ireland's GNP because they're Irish. However, if a German engineer works for a tech company in Cork, their income would be subtracted from Ireland's GNP.
Important
The main difference between GDP and GNP is that GDP focuses on location (where production happens), while GNP focuses on ownership (who owns the producers).
The impact of increased national income
When national income rises, it creates positive effects throughout the economy:
For individuals
People experience higher incomes, which improves their standard of living. Families can afford better housing, education, and healthcare. For example, workers might receive pay rises, enabling them to save more or spend on luxury items like holidays abroad.
For businesses
Companies benefit from increased demand for their products and services, leading to higher profits. Businesses like Brown Thomas might see more customers purchasing expensive items, whilst restaurants experience increased bookings as people have more disposable income.
For government
The government receives more tax revenue from higher incomes and increased business profits. This additional revenue allows greater investment in public services like schools, hospitals, and infrastructure projects such as the M50 upgrade or new Luas lines.
Note
The benefits of increased national income create a positive cycle - higher incomes lead to more spending, which generates more business profits and tax revenue, further supporting economic growth.
The impact of decreased national income
When national income falls, it creates negative effects across the economy:
For individuals
People face reduced incomes, leading to lower living standards. Families may need to cut back on non-essential spending, delay major purchases like cars, or reduce their savings.
For businesses
Companies experience decreased demand for their goods and services, resulting in lower profits. Retailers like Dunnes Stores might see reduced sales, whilst restaurants may have fewer customers, potentially leading to staff redundancies.
For government
Government faces increased social welfare costs as unemployment rises, whilst simultaneously receiving less tax revenue. This forces difficult decisions about reducing spending on important services like education or healthcare, creating a challenging cycle during economic downturns.
Important
Economic downturns create a negative cycle where reduced income leads to less spending, causing business losses and unemployment, which further reduces national income.
Summary
Key Points to Remember:
- National income measures a country's total annual earnings from producing goods and services
- Two calculation methods exist: income method (producer focus) and expenditure method (consumer focus)
- GDP measures production within a country's borders, whilst GNP measures production by a country's citizens regardless of location
- Rising national income benefits individuals, businesses, and government through higher incomes, profits, and tax revenues
- Falling national income creates economic hardship through reduced incomes, lower profits, and increased government welfare costs